Physical Science

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Four groups of rats are tested in a lab. Group 1 is given a special hornmone for muscle growth. Group 2 is given a special multivitamin diet. Group 3 receives both the hormone treatment and the multivitamin diet. Group 4 does not receive any extra treatment or special diet. which of the groups is the control group for this experiment? Explain your reasoning.

  • Physical Science -

    group 4 because they are the group that nothing is happening to. they are what the scientists will compare the results back to.

    hope that helps!

  • Physical Science -

    thank you

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